S. Feldman, M. Marin, M. Ostendorf, and M. Gupta. Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing, page 4781--4784. Washington, DC, USA, IEEE Computer Society, (2009)
E. Boese, and A. Howe. Proceedings of the 14th ACM International Conference on Information and Knowledge Management, page 632--639. New York, NY, USA, ACM, (2005)
B. Pang, L. Lee, and S. Vaithyanathan. Proceedings of the ACL-02 conference on Empirical methods in natural language processing-Volume 10, page 79--86. Association for Computational Linguistics, (2002)
Y. Lee, and S. Myaeng. Proceedings of the 25th annual international ACM SIGIR conference on Research and development in information retrieval, page 145--150. ACM, (2002)